Antifriction-bearing.



A. .A. WEIGEL.

ANTIFRICTION} BEARING. APPLICATION FILED APR. 2. 1914.

1 168,358, Patented Jan. 18, 1916.

2 SHEETS-SHEET I.

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A. A. WEIGEL.

ANTIFRICTION BEARING.

APPLICATION FILED APR. 2, 1914.

Patented Jan. 18, 1916.

2 SHEETS-SHEET 2.

-To all whom'it may concern: v

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.s e n i e i's r e Patented Janf18,1916.

" 1 *"Ap ncatim meanrim, 1914.. SerieilNo. 828,953.

' -Beit knownt-hat I, ARNOLD A. 'WEIGEL, a

citizen of the United States, and a resident" of Chicago,in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Antifriction-Bearings; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accom-' panying drawings and to the letters-of reference marked thereon, which form a part of this specification.

"This invention relates to improvements in antifriction bearings and particularly to antifriction bearings adapted for use as center bearings interposed between the truck and body'bolsters of a railway car and in analogous situations.

The center bearing illustrated is of the general type described in the patent heretofore granted on the 20th day of June 1911 to Edwin S. /Voo'ds, :No. 995,835, entitled Antifriction center bearing, in which there :are interposed between 'two relatively oscillatory bearing members a' plurality of annularly arranged, radially disposed, antifriction elements having conical, inwardly tapering bearin surfaces for rolling engagement The antifriction elements as preferably made for this'ty'pe of bearing, are drop *forgings. It has been found that in manufacturing suchantif'riction elements it is impossible to drop forge them in such way that they will all beidentically alike.- Some of them will be a little too wide at the outerends and too? narrow at their inner ends,- while in others the proportions will bereversed. As a result when the antifriction elements are assembled, it is impossible for them all to assume a true radial position with reference to the center of the bearing and as such radial disposition is essential for the 'efiicient operation of the bearing, it

is manifest that time and expense is required to be expended in order to'select only antifriction elements that when assembled .will assume the desired. relation. In order to obviate'this difiiculty I have provided "the construction embod ing the present inven-' tion which consists of the matters hereinafter described and more particularly point out-in the appended claims;

- in the d a sig re 151s a iew wer resenting a vertical central section through a bearing of the type described provided with my improvements. Fig. 2 is a view representing-a transverse section through Fig."

1 in a plane indicated by the line 22 of F g. 1 and as looked at from below in the direction of the arrows. Figs. 3 and 4 are perspective views of spacing blocks used in v connection with my invention. Fig. 5 is a partial vertical sectional view of a slightly different form of center bearing provided with my improvement. Fig. 6 is a View representing a transverse section of the bearing in a plane indicated by the line 6- -6 of Fig.

and as looked at from below in the direction of the arrows. Fig. 7 is a view representing still another type of center bearing provided with my improvement. Fig. 8 is 'a view representing a transverse section through Fig. 7 in a plane indicated by the 'line 88 of Fig. 7 and as looked at from below in the direction of the arrows.

' Referring now to that embodiment of my invention illustrated in the drawings and" particularly in Figs. 1 to 4 inclusive thereof:

10 indicates an upper bearing member and 11 a lower bearing member adapted to form a center bearing of the kind described. The

upper bearing member has a hub 12 which engages in'a'hole'or o-pening 13 in the lower bearing member and which is itself provided with a central hole 1% for thefamiliar king bolt.

i 15 indicates the antifriction elements in-" terposed between the two bearing members and adapted to transmit load from the upper bearing member to the lower bearing member. The antifriction elements 15 as shown in Figs land 2 have top and bottom conical, inwardly tapering bearing surfaces 16, 17,-which are adapted for rolling engagement with the respective bearing members. Said antifriction elements also have flat sides 18,18 which are designed to be dis-' posed in planes radial to the center ofthe bearing when the antifriction elements are in'ann ular recesses 19, 20 provided in the upper bearing member at the sides of the smarter ahamb ro a aing d t f {a them.

-noted that the antifriction element 1nd1-' tion elements to support saidantifrictioii elements in the upper bearing member when the lower bearing member is withdrawn.

l/Vhen'the antifriction elements are-drop forged which is the preferable manner in which to make them, both for purposes of. economy and for strength, it will be found as already stated that the antifrictionele. "ments as "they areassembled will tend to depart more and more from the desiredra dial position owing to the inequalities in their dimensions occurring in drop forging Thus looking at. Fig-2' it will be cated at 21 and the one indicatedat 22 are i such that if they were brought together the antifriction element 22would noteven approximate a radial position.

23 indicates a spacing-block which is placed between the two antifriction elements 21,22, which is wider:at its inner end. than .at its outer end and which isradially disposed between the two antifrictlon elements .in such manner as to brin them into approximately a radial position. I

I Several of the spacing-blocks referredto may be required in each antifriction bear- 1 g and as shown in Fig. 2 there are four,

that is to say, the one already referred to, 23, and those indicated respectively at 24, 25 and 26. These spacing-blocks (shown in perspective in Figs. 3 and 4,) consist of long thin blocks of substantiallv the length of the antifriction element, said blocks being provided at their ends with trunnions 27, 28 which are adapted for engagement 7 in the annular grooves 19. 20 ofthe bearing in the same manner as the like trunnions on the antifriction elements themselves. These blocks are preferably made in two sizes. one. as shown in Fig. 3,.with the inner end considerably thinner than the outer end, I

and. the other, as shown in Fig.4, with the inner end somewhat thicker than the'outer end. I find that bv having a number of blocks of the two kinds when assembling the bearing. either type of block may be used as required so that when the antifriction elements are all assembled. all of them may be made to assume an approximately radial position with reference to the center of the bearing. The blocks are made of a height less than that of the antifriction elements 'so that they will not contact at their upper and lower edges with either of the bearing members and thus will have no eflectto modifv or change the normal operation of the antifriction elements.

In'-Figs. 5 and 6 I have shown my improvement applied to a bearing in which the antifriction elements are inthe form of full cones. In these views 15 indicates the 'antifriction elements and 23* the spacingblock.

In-Figsu7 and 8 1 have shown-the improvement applied to an antifriction bear- Q'ments in approximatelyradia'l positions so thaththeyiarecapable of operating in the --desiredmanner.. p V 'Iclaim as myinventionr 1. In a center bearing, in: combination with upper and lower bearing members and 1- a plurality of annularly arranged, radially disposed antifriction elements adapted to transmit load between said bearing members, a'plurality of spacing blocks disposed at angular intervals among said antifrictiolr elements, said spacing blocks approximating the vertical section of said antifriction elements but being of less'vertical dimensions, and being of less thickness in an arcuate diing wherein the antifriction elements are rection at one end thanat the other and being provided with means for suspending them in proper relation between said antifriction elementsg I "2. Ina center bearing, 1n comb nation a plurality of annularlv arranged. radially disposed antifriction elements adapted to transmit load betweensaid bearing members, a plurality of spacing blocks disposed at antical height than said antifriction elements and having substantiallv flat faces adapted to engage the radial faces of said antifric; tion elements, the faces of said spacing? blocks being'spaced apart at ditferen't'angulardistances at their inner and'outer ends, and means for suspending said spacing blocks in non-bearing antifriction elements.

3. In a center bearing. in combination with upper and lower bearing members and 3 relation between said gular intervals among said antifriction ele-""'- ments. said spacing blocks being of less verwith upper and lower bearing members and V aplurality of -annularlv arranged. radially disposed antifriction elements adapted to transmit load between said bearing mem-"" bers, a plurality of spacing blocks disposed I at angular intervals among said antifriction elements. said spacing blocks being of less vertical height thanvsaid antifriction elements and having substantially Lflat faces" adapted to engage the radial faces .of said antifriction elements. the faces of'said'spacing blocks being spaced apart'at 'difl'erent "an ular distances at theirinnr and outer ends, and means for suspending said spacing blocks in said upper bearing member in non-bearing relation between said antifriction elements.

4:. In a center bearing, in combination with upper and lower bearing members and a plurality of annularly arranged, radially disposed antifriction elements adapted to transmit load between said bearing members, a plurality of spacing blocks at angular intervals among said antifriction elements,

said spacing blocks being of less vertical 1 height than said antifriction elements and having substantially flat faces adapted to engage the radial faces of said antifriction elements, the faces of said spacing blocks being spaced apart at different angular distances at their inner and outer ends, and means for suspending said spacing blocks in said upper bearing member in non-bearing relation between said antifriction ele ments, said means comprising inwardly and outwardly facing annular shoulders formed in said upper bearing member and trunnions formed on the inner and outer ends of said spacing blocks, said trunnions being adapted for supporting engagement with the respective inwardly and outwardly facing annular shoulders formed in said upper bearing member.

In testimony, that I claim the foregoing as my invention I aflix my signature in the presence of two Witnesses, this 24th day of March A. D. 1914.

ARNOLD A. WEIGEL.

Witnesses:

GEORGE R. WILKINS, T. H. ALFREDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. r 

